Additional Notes
What are the risks of using flatMap in Project Reactor?
Track: Java
Topic: Reactive Streams
Focus: Thread-Per-Request Bottleneck
Java: Thread-Per-Request Bottleneck
Answer
It can lead to uncontrolled concurrency. Frame the concept in practical terms so you can explain it during interview discussion.
Using flatMap without controlling concurrency can spawn numerous parallel streams, overwhelming resources. For instance, fetching user data for a bulk list of IDs using flatMap without limits could flood the database with requests, causing performance degradation.
Using flatMap without controlling concurrency can spawn numerous parallel streams, overwhelming resources. For instance, fetching user data for a bulk list of IDs using flatMap without limits could flood the database with requests, causing performance degradation.
Topics: Java Reactive Streams Thread-Per-Request Bottleneck